DateTime to javascript date

Question

From another answer on Stackoverflow is a conversion from Javascript date to .net DateTime:

long msSinceEpoch = 1260402952906; // Value from Date.getTime() i         


        

Answer 1

If you use MVC with razor

-----Razor/C#

var dt1 = DateTime.Now.AddDays(14).Date;
    var dt2 = DateTime.Now.AddDays(18).Date;

    var lstDateTime = new List<DateTime>();
    lstDateTime.Add(dt1);
    lstDateTime.Add(dt2);

---Javascript

$(function() {

            var arr = []; //javascript array

            @foreach (var item in lstDateTime)
             {
                @:arr1.push(new Date(@item.Year, @(item.Month - 1), @item.Day));
             }

• 1: create the list in C# and fill it
• 2: Create an array in javascript
• 3: Use razor to iterate the list
• 4: Use @: to switch back to js and @ to switch to C#
• 5: The -1 in the month to correct the month number in js.

Good luck

Answer 2

Try:

return DateTime.Now.Subtract(new DateTime(1970, 1,1)).TotalMilliseconds

Edit: true UTC is better, but then we need to be consistent

return DateTime.UtcNow
               .Subtract(new DateTime(1970,1,1,0,0,0,DateTimeKind.Utc))
               .TotalMilliseconds;

Although, on second thoughts it does not matter, as long as both dates are in the same time zone.

Answer 3

You can try this in your Action:

return DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss");

And this in your Ajax success:

success: function (resultDateString) {
    var date = new Date(resultDateString);
}

Or this in your View: (Javascript plus C#)

var date = new Date('@DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss")');

Answer 4

<input type="hidden" id="CDate" value="<%=DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")%>" />

In order to convert the date to JS date(all numbers):

var JSDate = $("#CDate").val();
JSDate = Date.parse(JSDate);

Answer 5

JavaScript Date constructor accepts number of milliseconds since Unix epoch (1 January 1970 00:00:00 UTC). Here’s C# extension method that converts .Net DateTime object to JavaScript date:

public static class DateTimeJavaScript
{
   private static readonly long DatetimeMinTimeTicks =
      (new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).Ticks;

   public static long ToJavaScriptMilliseconds(this DateTime dt)
   {
      return (long)((dt.ToUniversalTime().Ticks - DatetimeMinTimeTicks) / 10000);
   }
}

JavaScript Usage:

var dt = new Date(<%= DateTime.Today.ToJavaScriptMilliseconds() %>);
alert(dt);

Answer 6

With Moment.js simply use:

var jsDate = moment(netDateTime).toDate();

Where netDateTime is your DateTime variable serialized, something like "/Date(1456956000000+0200)/".